Automatic ball-bearing side bearing for railroad trucks



Aug. 21, 1923. 1,4659@ G. M. HYNDEs AUTOMATIC BALL BEARING SIDE BEARING FOR RAILROAD TRUCKS Filed June 27. 1922 Zigi- Patentedv Aug. 2l, i923.

GEORGE M. HYNDES, or DALLAS, TEXAS.

AUTOMATIC BALL-BEARING SIDE BEARING FOR lRAILIRYOAI) TRUCKS. 1

Application filedV June 27, 1922. Serial No. 571,205.

To all whom t may concern.;

Be it known that I, GEORGE M. HYNDns,

a citizen ofthe United States, and a resident of Dallas, in the county of Dallas and State of Texas, have invented a new and improved Automatic vBall-Bearing Side` Bearing for Railroad Trucks, of which theV following is a full,`clear, and exact description.- k 'Y This invention relates to automatic ball bearing side bearings for railroad trucks, and has for an object the provision of means associated with a side bearing whereby -theshock of the weight of cars on the roadbed and rail joints is eiiiciently reduced sov that the necessity for repairing` the bed and the joints is greatly reduced. This invention has the relation of an improvement on my United States Patent No. 1,429,737, issued September29, 1922, entitled Automatic ball bearing side bearings for railroad trucks.

Another object resides in the particularv construction and arrangement of A parts which are hereinafter described and claimed and shown in the accompanying drawings.

The invention is illustrated in thedrawings, of which- Figure 1 is a vertical section taken on the line 1-1 of Fig, 2, which is a plan view.

Fig. 3 is a transverse vertical section taken on the line 3-3 of Fig. 2. The form of the invention shown in the drawings is a preferred form, although it is understood that modifications in the construction and arrangement of the parts andy in the character of the materials usedrmay be adopted without departing from the spirit of the invention. Y

The invention as shown in the drawings trucks and includes a side bearing platel disposed on the underside nof a car body 2 and over a truck bolster 3. The bearing plate 1 is adapted to rest or bear on a ball within a shallow receptacle or casing 5. VThe ball is held normally in the central position,

' as shown in Fig. 2 and described inthe above-mentioned application, by means 'of application.

relates to a side bearing device for railroadv bearing 4 which is disposed for movementV abutment plates 6 and 7 pressed Jforwardly 50 by springs 8 and 9. I' Y Y The operation and relation of the bearing plates 1, theball 4 and the casing 5 `are clearly described in the above-mentioned My invention` comprises the'55 disposition beneath the chasing 5 of av plurality of `cushioning springs 10,111, 12 and 13, as shown in F ig. 1. There may be any number of these springs disposed beneath the casing but their importance in connection with the casing 5 is that they permit a proper bearing relation between the casing 5, the ball 4 and the plate 1 and yet cushion the shock of the weight of the car transmitted through the plate 1 to the bolster frame 65 3. The springs above mentioned are suitably disposed within a casing 14 which at the ends has slots 15 and 16 formed therein to permit the rear ends of the abutment plates 6 and 7 to project out of the casing 5, as 70 well as the stems 17 and 18, shownfin F ig. 1

particularly. The interior dimensions of the casing or receptacle 14 are only slightly larger than the exterior dimensions of the casing 5, sot-hat the casing 5 has very little 75, lateral or longitudinal play withinthe receptacle 14 but has a proper amount of vertical movement due tolthe action of the springs. The end walls 19 and 20 of the receptacle 14 also prevent longitudinal movement-of the casing 5 therewith'in. The casing 5 is provided with a plurality of ears such asv 21 which extend into lateral slots 22 formed in the side wallsof the receptacle l14, andthese Vears are adapted to receive' bolts 23 on the lowerY ends of which nuts 24 are placedto limit the upward movementof Y the casing 5 within the receptacle or casing 14. Y i

Therefore, whenever the cars are moving over joints, the blow of the weight of the car instead of being directly transmitted thereto with full force is cushioned by'reayson of the interposition between theY side bearing casing and the truck bolster of one or more springs or' cuslnonlng means to take Y up this blow. In this manner, therefore, the

wear and tearron the roadbed and the rail Y joints are eliminated to a considerable degree, and this result, in combination with the use of the particular side bearings shown, makes a very effective side bearing unit. Y

Wrhat I claim is :Y p

A side bearing unit for railroad trucks which includes a. truck frame, a receptacle on said frame, a bearing `casing disposed casing, the interior of the casingbeng c011-Y siderably larger than the ball-bearing to permit a substantial freedom of movementof the ball bearing'in all directions there- .Withinpunderlthe Weight'of the car; loV Within said receptacle7 a plurality of springs H y .Gnomiz M. ln rnnns; 

